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प्रश्न
Match the noble gases – with their correct symbols:
| Noble gases | Symbols |
| (a) Helium | (1) Ar |
| (b) Neon | (2) Xe |
| (c) Argon | (3) Rn |
| (d) Krypton | (4) He |
| (e) Xenon | (5) Kr |
| (f) Radon | (6) Ne |
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उत्तर
| Noble gases | Symbols |
| (a) Helium | He |
| (b) Neon | Ne |
| (c) Argon | Ar |
| (d) Krypton | Kr |
| (e) Xenon | Xe |
| (f) Radon | Rn |
संबंधित प्रश्न
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Na1+ Cl1-
Select the correct answer from the choice given below.
The type of element-phosphorus
Give the symbol of the following element:
Magnesium
Write the radical of the following valency:
Sulphite
Give the formula of the following acid:
Hydrochloric
______ of some elements are derived from Latin or Greek names of the elements.
Which of the following would weigh the highest?
Which letter is never used in any element symbol?
